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Mike S.
Mike S., ASE Certified Technician
Category: Nissan
Satisfied Customers: 6777
Experience:  ASE Certified since 1985
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Installed a 7 pin trailer wiring harness everthing works

Customer Question

installed a 7 pin trailer wiring harness everthing works except there is constant 12 volts on the blue trailer brake wire
JA: Have you checked all the fuses? Do you have a wiring diagram?
Customer: fuses are good.no diagram
JA: What is the make/model of your car?
Customer: 2014 Nissan frontier crew cab 4x4
JA: Are you fixing your Frontier yourself? What have you tried so far?
Customer: yes,installed the tow package wiring harness kit several months ago ,pulled a trailer with brakes many times all lites worked ,pugged into a travel trailer with electric brakes, and found brakes lock up there is 12 volts on the blue brake wire all the time
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 26 days ago.
Category: Nissan
Expert:  Mike S. replied 26 days ago.

Hi, I am Mike, welcome. I'm reviewing your question.

Expert:  Mike S. replied 26 days ago.

The blue wire on the Frontier?

Expert:  Mike S. replied 26 days ago.

I want to lookup the wiring diagram, does this have the 2.5 or 4.0 engine?

Expert:  Mike S. replied 26 days ago.

I see that the blue wire should be hot when the key is on run.

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